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Now look in the datasheets to compare those two transistors what is the Vce for such current.

2SC2001 Datasheet

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. It would take too much space to explain the exact mechanism here, but the gist is, the transistor acts as an impedance conversion element at high frequencies due to beta being frequency dependent. Chupacabras 3, 2 11 Hi there Chupacabras, when I replace it with a good C the whole circuit works just fine.

Sign up or log in Sign up using Google. Email Required, but never shown. Thanks for that, but just want to clarify where do I put the resistor? Suitable replacement for 2SC transistor? This is your circuit: This is being used in a flyback circuit, which switches at approx ummm kHz or so. I have a circuit in which the C aka 2SC transistor failed after many years. The switching transistor shouldn’t go into breakdown. This would severely limit the lifetime of an already stressed component.


What type of voltage booster circuit is this? Sign up using Email and Password.

My previous, sort-of related question is here: BC doesn’t seem suitable Ask Question. Well, it’s whether excessive base current, or excessive product of Ic x Vce. How do you know that your transistor is the only problem in your circuit?

Home Questions Tags Users Unanswered. Post as a guest Name. The BC got kind of warm, and didn’t work. Hence a load at its emitter or collector can cause it to have a negative impedance at its base. It is off the chart, it is a bad sign for this situation.

I have short-term access to another C – putting that in the circuit works just fine, so I know the transistor is the issue. So, transistor could overheat by high Vce or Ic. Base current is not a problem, it is limited by R to 4. Vce would be datashest higher than 1.

2SC2001-L Datasheet

The additional resistor dampens this oscillation. There are huge differences: BC hFE from to But it dxtasheet be lower, say it is mA. So, is there something ‘special’ about the C trannies? By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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2SC Datasheet(PDF) – TRANSYS Electronics Limited

I Googled 2sc20011, and tried to replace it with a BC So power dissipation would be mW, which is above maximum allowed power dissipation. Is it possible that there is another problem which caused your transistor to fail and which makes your new transistor hot?

Hi, Attila, thanks so much for prompt reply. I have seen them referred to as ‘switching’ transistors somewhere, I don’t know what that specially means. Sign up using Facebook. Thanks, any help appreciated!

I do not say your circuit is drawing mA, peaks could be higher or lower.

What could cause transistor to overheat?